55 results found

Search Results for: bony

Chondrichthyes

Definition noun A taxonomic class comprised of cartilaginous fish Supplement Chondrichthyes is taxonomic superclass of... Read More

Osteichthyes

Definition noun A taxonomic superclass of a diverse group of fish that have skeletons composed primarily of bone... Read More

Kingdom Animalia

Kingdom Animalia Definition Each person can say that they know of or can name at least one animal. However, do people know... Read More

Manubrium

The manubrium is a handle-like structure, as in the manubrium of the sternum or of the malleus. In Latin, it translates to... Read More

Ear

Ear 1. The organ of hearing; the external ear. in man and the higher vertebrates, the organ of hearing is very complicated,... Read More

Spongy bone

Spongy bone, also known as cancellous bone or trabecular bone, is a type of bone tissue found at the ends of long bones and... Read More

Chordata

Chordata Definition What is Chordata? Chordata is the phylum of the animal kingdom that includes a large number of animal... Read More

Pelvic girdle

pelvic girdle The bony ring formed by the hip bones and the sacrum, to which the lower limbs are attached. Synonym: cingulum... Read More

Abdominal reflex

Definition noun, plural: abdominal reflexes Abdominal wall muscle contraction of the umbilicus toward the abdominal quadrant... Read More

Olecranon

Definition noun (anatomy) The large process at the proximal end of the ulna of the forearm projecting behind the... Read More

Skull

skull A school, company, or shoal. A knavish skull of boys and girls did pelt at him. These fishes enter in great flotes and... Read More

Osteocyte

Osteocyte Definition The osteocyte is a mature bone cell. Other bone cell types are osteoprogenitor cells, osteoblasts, and... Read More

Physical characteristics of Sharks

Physical Characteristics of Sharks Sharks (superorder Selachimorpha) are a type of fish with a full cartilaginous... Read More

Peripheral nervous system

Definition noun The part of the nervous system that relays between the central nervous system and the rest of the body,... Read More

Osteon

What is an Osteon? In osteology (the study of bony structures and skeleton), the osteons (or Haversian systems) are the... Read More

Skeletal system

What is the Skeletal System? How to define a skeleton? The skeletal system is the main framework that gives your body its... Read More

Lamellae

Definition noun, singular: lamella (general) Thin structures resembling a plate. (cell biology) Intergrana thylakoids, i.e.... Read More

Gomphosis

Definition noun, plural: gomphoses A type of fibrous joint in which a conical process is inserted into a socket-like... Read More

Diarthrodial joint

What is a diarthrodial joint? A diarthrosis joint is a freely moving joint characterized by its mobility and joint cavity... Read More

Secondary spongiosa

Definition The spongy substance formed from the conversion of primary spongiosa, thereby, composed of the enlarged... Read More

Osseous tissue

What Is Bone Or Osseous Tissue? Osseous tissue is the structure providing, hard and mineralized connective tissues. Osseous... Read More

Canthus

Canthus Definition The canthus refers to the corner or angle of the eye formed by the joining of the lower and upper... Read More

Condyloid joint

A joint is a point where two bones are attached and are capable of movement. The joints not only provide the movements of... Read More

Homo neanderthalensis

Definition noun Species of primitive human beings that lived between 28,000 and 300,000 years ago. Various specimens of... Read More

Homoplasty

Definition noun, plural: (1) (evolution) The acquisition of a similar form or structure between species of different... Read More

Lacuna

Definition of Lacuna What is lacuna? The word "lacuna" (noun, plural: lacunae) is derived from the Latin word- 'lacus',... Read More

Analogous structures

Analogous Structures Definition In evolutionary biology, analogous structures are biological structures having similar or... Read More

Ichthyology

Definition noun A branch of biology concerned primarily with the study of fish Supplement Ichthyology is the scientific... Read More

Sarcopterygian

Definition noun, plural: Actinopterygians Any of a group of Osteichthyes characterized primarily by their lobed... Read More

Endoskeleton

The internal skeleton; bony and cartilaginous structure (especially of vertebrates).A skeletal structure internal to an... Read More

Cochlear duct

The cochlear duct is the spiral tube in the bony canal of the cochlea. It is located on the outer wall of cochlea, between... Read More

Symbiosis

Symbiosis Definition What is symbiosis? Symbiosis can be defined as any kind of relationship or interaction between two... Read More

Trabecular bone

Definition noun (1) The osseous tissue that fills the interior or cavity of bones with a latticework of small spicules or... Read More

Ilium

Definition noun, plural: ilia The uppermost and the largest bone of the pelvis that is composed of two major parts in... Read More

Egg

Definition noun, plural: eggs (1) An organic vessel where an embryo develops, and one in which the female of an animal... Read More

Digastric muscle

Digastric Definition The digastric muscle is a paired muscle located under the jaw, consisting of the anterior and... Read More

Vestibule

Languages are intriguing subjects that you can spend your entire life with but never get enough of… As we begin the... Read More

Mucus

Definition noun A viscous, slippery secretion of a gland that protects and lubricates surfaces Supplement Mucus refers to... Read More

Fin

Fin 1. (Science: marine biology, zoology) An organ of a fish, consisting of a membrane supported by rays, or little bony or... Read More

Movable joint

Definition noun The most common and movable type of joint which is characterized by the presence of a layer of... Read More